<template>
  
   <el-container class="home-container">
       <!--头部区域-->
  <el-header>
      <div>
          <img src="../assets/logo.jpg" alt="瑾钰生活铺" class="img">
          <span>电商后台管理系统</span>
      </div>
      
       <el-button type="info" @click="logout" >退出</el-button>
  </el-header>
  <!--页面主体区域-->
  <el-container>
      <!--侧边栏-->
    <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!--侧边栏菜单-->
        <el-menu  background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
      :unique-opened="true"
      :collapse="isCollapse"
      :collapse-transition="false"
      router
      :default-active="activePath">
        <!--一级菜单-->
      <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
            <!--一级菜单模板区域-->
        <template slot="title">
              <!--图标-->
          <i :class="iconsObj[item.id]"></i>
          <span>{{item.authName}}</span>
        </template>

        <!--二级菜单-->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
            @click="saveNavState('/'+subItem.path)">
                
               <template slot="title">
              <!--图标-->
                    <i class="el-icon-menu"></i>
                  <span>{{subItem.authName}}</span>
                 </template> 
            </el-menu-item>
    
      </el-submenu>
     
    </el-menu>
    </el-aside>
    <!--右侧内容-->
    <el-main>
        <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
export default {
    data(){
        return{
            //左侧菜单数据
            menulist:[],
            //一级菜单图标
            iconsObj:{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            //折叠判断值
            isCollapse:false,

            //被激活的链接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList();
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear();
            this.$router.push("/login");
        },
        //获取所有菜单
        async getMenuList(){
           const{data:res}= await this.$http.get('menus');
           if(res.meta.status!==200) return this.$message.error(res.meta.msg);
           this.menulist=res.data;
           console.log(res);
        },
        //点击按钮，切换菜单的折叠与展开
        toggleCollapse(){
            this.isCollapse=!this.isCollapse
        },

        //保存链接的激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath);
            this.activePath=activePath;
        }
    }
}
</script>

<style lang="less" scoped>
.home-container{
    height:100%;
}
.el-header{
    background-color: #373d41;
    display:flex;
    justify-content: space-between;
    padding-left:0;
    align-items: center;
    color:#fff;
    font-size:20px;
    >div{
        display:flex;
         align-items: center;
         span{
             margin-left:15px;
         }
    }
}
.img{
    width:30px;
    height:30px;
    background-color:#373d41;
    border-radius: 50%;
    
}
.el-aside{
    background-color: #333744;
     .el-menu{
        border-right:none;
    }
}
.el-main{
    background-color: #EAEDF1;
   
}
.iconfont{
    margin-right:10px;
}
.toggle-button{
    background-color: #4A5064;
    font-size:10px;
    line-height:24px;
    color:#fff;
    text-align:center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>